Which expression is equivalent to (2x^2 + 4x – 7)(x – 3)?
a. x(2x^2 + 4x – 7) + 3(2x^2 + 4x – 7)
b. x(2x^2 + 4x – 7) – 3
c. –3x(2x^2 + 4x – 7)
d. (2x^2 + 4x – 7)(x) + (2x^2 + 4x – 7)(–3)

How many days was the temperature above 90 degrees?

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given